UntagCertificateAuthority

This function removes one or more tags from your private CA. A tag consists of a key-value
pair. If you do not specify the value
portion of the tag when calling this function, the tag will be removed regardless
of value. If you specify a value, the tag is removed
only if it is associated with the specified value. To add tags to a private CA,
use the
TagCertificateAuthority function. Call the
ListTags function to see what tags are associated with your CA.